<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<a href="12进制时钟.html">作业1</a>
		<a href="商店.html">作业2</a>
			<a href="">作业3</a>
		
		
	</body>
</html>
